class Settings:
    def __init__(self):
        self.screen_width = 300
        self.screen_height = 500
        self.bg_color = (230, 230, 230)
        self.ship_speed = 3
        # 子弹设置,速度2,,宽度3,高度15,颜色深灰色
        self.bullet_speed = 2.0
        self.bullet_width = 3
        self.bullet_height = 15
        self.bullet_color = (60, 60, 60)
